<template>
  <view>
    <!-- 1. 头部搜索框 -->
    <search />
    <!-- 2. tabs 选项卡 -->
    <u-tabs :list="tabList" lineColor="#EB4450" :scrollable="false"></u-tabs>
    <!-- 3. 商品列表 -->
    <view class="goods-list">
      <!-- 商品列表渲染 -->
      <navigator :url="`/goodsPkg/goods_detail/goods_detail?goods_id=${item.goods_id}`" class="goods-item" v-for="item in goodList" :key="item.goods_id">
        <image 
        :src="item.goods_small_logo" 
        class="goods-image" 
        mode="aspectFit" />
        <!-- 商品信息 -->
        <view class="goods-info">
          <view class="goods-name">{{ item.goods_name }}</view>
          <view class="goods-price">{{ item.goods_price }}</view>
        </view>
      </navigator>
    </view>
    <!-- 底部提示 -->
    <view v-if="total === goodList.length " class="bottom-tip">我有底线</view>
  </view>
</template>

<script>
export default {
  data() {
    return {
      tabList: [{ name: "综合" }, { name: "销量" }, { name: "价格" }],
      q:{
        query:"",
        cid:"",
        pagenum:1,
        pagesize:5
      },
      goodList:[],
      total:null
    };
  },
  onLoad(options){
   Object.assign(this.q,options)
   this.getGoodList()
  },
  methods:{
   async getGoodList(){
    const {message} = await uni.$u.http.get('/goods/search',{ params:this.q })
    this.goodList.push(...message.goods)
    // 判断 数据加载完不在发请求
    this.total = message.total
    }
  },
  // 触底
  onReachBottom(){
    if(this.total===this.goodList.length) return
    this.q.pagenum++;
    this.getGoodList()
  },
  // 监听下拉
  async onPullDownRefresh(){
    this.goodList=[],
    this.q.pagenum=1,
    this.total=null
    // 异步  加载完数据再关闭
    await this.getGoodList()
    // 关闭下拉刷新
    wx.stopPullDownRefresh()
  }
};
</script>

<style lang="scss">
.goods-list {
  .goods-item {
    display: flex;
    border-bottom: 1rpx solid #ddd;
    padding: 25rpx;
    .goods-image {
      width: 190rpx;
      height: 190rpx;
    }
    .goods-info {
      flex: 1;
      font-size: 24rpx;
      /* 垂直方向两端对齐 */
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      padding: 20rpx;
      .goods-name {
        /* 多行超出隐藏 */
        overflow: hidden;
        -webkit-line-clamp: 2;
        text-overflow: ellipsis;
        display: -webkit-box;
        -webkit-box-orient: vertical;
      }
      .goods-price {
        color: #eb4450;
        /* 前面的价格符号 */
        &::before {
          content: "￥";
          font-size: 80%;
          margin-right: 5rpx;
        }
      }
    }
  }
}
.bottom-tip {
  text-align: center;
  height: 80rpx;
  line-height: 80rpx;
  font-size: 28rpx;
  color: #888585;
}
</style>